示例 – 单页面 Streamlit 应用程序¶
注意
此功能适用于 AWS、Microsoft Azure 和 GCP 区域 的账户。不支持 AWS PrivateLink 和 Azure 专用链接。
本主题包含单页面 Streamlit 应用程序的基本示例。
有关从 Streamlit 应用程序访问 Snowflake 数据的详细信息,请参阅 示例 - 从 Streamlit in Snowflake 访问 Snowflake 数据。有关创建多页面 Streamlit 应用程序的信息,请参阅 使用 SQL 创建 Streamlit 应用程序。
以下示例展示了一个基本的 Streamlit 应用程序:
# Import python packages
import streamlit as st
from snowflake.snowpark.context import get_active_session
# Write directly to the app
st.title("Example Streamlit App :balloon:")
st.write(
"""Replace this example with your own code!
**And if you're new to Streamlit,** view
our easy-to-follow guides at
[docs.streamlit.io](https://docs.streamlit.io).
"""
)
# Get the current credentials
session = get_active_session()
# Use an interactive slider to get user input
hifives_val = st.slider(
"Number of high-fives in Q3",
min_value=0,
max_value=90,
value=60,
help="Use this to enter the number of high-fives you gave in Q3",
)
# Create an example dataframe
# Note: this is just some dummy data, but you can easily connect to your Snowflake data
# It is also possible to query data using raw SQL using session.sql() e.g. session.sql("select * from table")
created_dataframe = session.create_dataframe(
[[50, 25, "Q1"], [20, 35, "Q2"], [hifives_val, 30, "Q3"]],
schema=["HIGH_FIVES", "FIST_BUMPS", "QUARTER"],
)
# Execute the query and convert it into a Pandas dataframe
queried_data = created_dataframe.to_pandas()
# Create a simple bar chart
# See docs.streamlit.io for more types of charts
st.subheader("Number of high-fives")
st.bar_chart(data=queried_data, x="QUARTER", y="HIGH_FIVES")
st.subheader("Underlying data")
st.dataframe(queried_data, use_container_width=True)